diff --git a/libpng.3 b/libpng.3
index 6dc60e56a..db773740e 100644
--- a/libpng.3
+++ b/libpng.3
@@ -5188,7 +5188,7 @@ the first widely used release:
  1.5.0beta01-58      15    10500  15.so.15.0[.0]
  1.5.0rc01-07        15    10500  15.so.15.0[.0]
  1.5.0               15    10500  15.so.15.0[.0]
- 1.5.1rc01           15    10501  15.so.15.1[.0]
+ 1.5.1beta01-11      15    10501  15.so.15.1[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
diff --git a/png.h b/png.h
index 7177cf485..1042c30b4 100644
--- a/png.h
+++ b/png.h
@@ -144,8 +144,7 @@
  *    1.5.0beta01-58          15    10500  15.so.15.0[.0]
  *    1.5.0rc01-07            15    10500  15.so.15.0[.0]
  *    1.5.0                   15    10500  15.so.15.0[.0]
- *    1.5.1beta01-10          15    10501  15.so.15.1[.0]
- *    1.5.1rc01               15    10501  15.so.15.1[.0]
+ *    1.5.1beta01-11          15    10501  15.so.15.1[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be